Mazda CX-9 Grand Touring 2009 Manual page 935

2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
While observing the PID, wiggle,
shake, and bend small sections of the
wiring harness while working from the
5
sensor to the PCM.
Is there a large change in the voltage
reading?
VERIFY TROUBLESHOOTING OF DTC
P0114 HAS BEEN COMPLETED
Verify that all disconnected connectors
reconnected.
Turn the ignition switch to the ON
position (Engine off).
6
Clear the DTC from the PCM memory
using the M-MDS.
Start the engine and run it at idle.
Retrieve DTCs using the M-MDS.
Is the PENDING CODE for this DTC
present?
VERIFY AFTER REPAIR PROCEDURE
Perform the "AFTER REPAIR
7
PROCEDURE". (See AFTER
REPAIR PROCEDURE [MZI-3.7].)
Are any DTCs present?
DTC P0116 [MZI-3.7]
DTC P0116 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES
DTC P0116 CHT sensor circuit range/performance
DETECTION
CONDITION
2008 Mazda CX-9 Grand Touring
Indicates the engine coolant temperature logic test has failed. This DTC indicates
that the CHT value is higher than the calibrated value and could prevent 1 or
more OBD monitors from completing. The PCM runs this logic after an engine
off and a calibrated soak period (typically 6 hours). This soak period allows the
IAT and the CHT to stabilize and not differ by more than a calibrated value.
DTC P0116 is set when all of the following conditions are met:
The CHT at engine start exceeds the IAT at engine start by more than a
calibrated value, typically 17°C {30°F}.
The CHT exceeds a calibrated value, typically 107°C {225°F}.
The fuel system, heated oxygen and misfire monitors have not completed.
The calibrated time to set DTC P0116 has expired.
No Go to the next step.
Replace the PCM, then go to the next step.
Yes (See PCM REMOVAL/INSTALLATION
[MZI-3.7] .)
No Go to the next step.
Go to the applicable DTC inspection. (See
Yes
DTC TABLE [MZI-3.7].)
No Troubleshooting completed.